nikolai wrote:roshea wrote:I thought the original "32" reply was about tyre diameter :
Yep. Maybe he misread 32s as 32t?
No, maybe he didn't.
People were talking about commuting on MTBs.
I made a comment that MTBs have inappropriate gearing for most on-road use: simply changing to narrow slick tyres doesn't address that.
A typical MTB has a 22-32-42 (or 44) triple crankset.
In my experience, a MTB triple gives a gear range that is far too low for the road. When riding such a crank on a commuter, I have found myself looking for more gears at the top end, and never, ever using the gears at the bottom end.
Most MTBs have something like an 11-32 cassette. On a 42t chainring (on 26x1.25" slicks), that gives you 32-93 gear inches. Not many commutes need lower than a 32" gear... thus, with standard MTB gearing, as I said, the middle and granny rings are quite redundant on the road.
To optimise a MTB for commuting requires more than just a tyre change.